Ventilator



R. L. BOURKE Jan. 7, 1930.

VENTILATOR Filed Aug. 16. 1927 e m w w w o fw T. A mL j z 5 Patented Jan. 7, 1930 UNITED sv'rA'rEs PTENT OFFICE f IBUSSELL L. IBOUBKE, 013' PETALUIA, OALIIOBI vnm'mron' Application led August 16, 1927. Serial Io. 213,818.

My invention relates to devices for withdrawing from a chamber portions of the atmosphere thereof in order to insure that the atmosphere of the chamber is always of the 6 desired quality.

An obJect of my invention is to utilize the naturally occurring wind for drawing undesired atmosphere out of a chamber.

Another object of my'invention is to pro- 10 vide a ventilator which is substantially without moving parts.

A further object of my invention isto provide a ventilator which afl'ords egress of atmosphere from a chamber but which does not permit the ingress of rain or snow. i

A further object of my invention is to provide a ventilator which takes advantage of winds from any direction.

My invention possesses other advantageous features some of which with the foregoing, will be set forth at length in the following 'description where I shall outline in full that form of the ventilator of my invention, which I have selected for illustration in the drawings accompanying and forming part of the present specification.. In said drawings I haveY shown one form of ventilator embodying my invention, but it is to be understood that I do not limit myself to such form since the invention, as set forth in the claim, may be embodied in a plurality of forms.

In the drawings:

Fig. 1 is an elevation of one form of' ventilator of my invention as installed on a roof.

Fig. 2 is a cross section of my ventilator,

' the plane of section being indicated by line 2-2 of Fig. 1.

The ventilator of my invention has been developed for and is particularly used in conjunction with houses for chickens. It is essential for the successful raising of chickens to have a well ventilated house and it is also very desirable to discharge from the chicken house not only atmosphere which is no longer fresh but also light feathers and similar maw terial. These ends are attained by the ventilator of my invention which I embody in` a number of different ways.

In one embodiment the roof 6 of the house' 4 protects it against all ordinary rain or snow.

is provided with an aperture 7 communicating with the interior thereof and over which 1s placed a casing 8. This casing can be of any suitable material such as Wood but preferably ls constructed of sheet metal. It is lnstalled with the top of the casing about on a level with the ridge 9 of the roof, and the "upper face of the casing slopes at a greater angle than the roof so that the ventilator mcrges smoothly therewith and acts as a barrier for wind coming from the right in Fig. 2; The upper` slde 11 of the casing is disposed substantially at right angles to the surface of the roof 6 and is provided with an outlet aperture 12 of a size comparable to that of the aperture 7 It is apparent that winds which sweep up the roof from the right in Fig 2 'tend to draw out' thru the aperture-7 and the outlet 12 some of the undesirable atmosphere from Within the chicken house while winds 'sweeping up the roof from the left in Fig. 2 are diverted by the ridge 9 and pass the outlet 12 in such a manner as also to withdraw atmosphere from within the housing.

In order to prevent the ingress of rain or snow thru the outlet 12, I have provided a shield 13 which preferably is a. metallic plate hinged, as at 14, to the sides of casing ,8. The Shield extends well over the outlet 12 and The hinged feature of the Shield is valuable in regulating the size of outlet 12 so that the operation of the ventilator can conveniently be Controlled. To that end, I provide an arm 16 secured to the shield 13 and fastened to a cord 17 by which an operator can regulate the opening` of the Shield 13 to any requisite amount. Although the Shield 13 is adjustable its movement is not essential to the operation 1of the ventilator. In actual practice moderate winds serve to maintain at all times fresh atmosphere within the house to which the ventilator is attached and also serve to exhaust light feathers and similar material from the interior of the house.

Ventilators constructed as above described are not only effective in maintaining a substantially constant circulation of air through the enclosures equipped therewith, but due to their construction, they are readily installed 'on roofs of any pitch.

I claim:

In combination with an apertured, inclined roof, a. hood provided with an exitopening secured over said aperture, the up per boundary of said exitopemng lying just be neath the level of the peak of said roof, a plate hinged to said hood adjacent to the exitopening therein, and means for sele'ctively positioning said hinged plate to either Shield or close the exit-opening in said hood.

In testimony whereof, I have hereunto set m hand.

y RUssELL L BOURKE. 

